modulate|modulated|modulates

智能手机通过调制无线电信号来发送信息。

Smartphones ___modulate radio signals to send messages.

她调节了音响的音量，使音乐更加柔和。

She ___modulated the volume of the speaker to make the music softer.

她在不同场合下巧妙地调整着自己的说话方式。

She skillfully ___modulates her speaking style for different occasions.